Putter



FIG. 1 is a rear toe side perspective view of a putter;

FIG. 2 is a rear elevational view thereof; and,

FIG. 3 is a fragmented cross-sectional view taken on line 3-3 of FIG. 2.

The portion of the club head shown in phantom is for illustrative purposes only and does not form any portion of the claimed design. The vertical lines on the inset surfaces on the back portion of a putter indicate the color red. 

The ornamental design for a putter, as shown and described. 